221370975

素因数分解:

$3^4\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 180

約数和(自身を含む): 502874064

約数和(自身を除く): 281503089

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 25, 27, 35, 45, 49, 63, 69, 75, 81, 97, 105, 115, 135, 147, 161, 175, 189, 207, 225, 245, 291, 315, 345, 405, 441, 483, 485, 525, 567, 575, 621, 675, 679, 735, 805, 873, 945, 1035, 1127, 1225, 1323, 1449, 1455, 1575, 1725, 1863, 2025, 2037, 2205, 2231, 2415, 2425, 2619, 2835, 3105, 3381, 3395, 3675, 3969, 4025, 4347, 4365, 4725, 4753, 5175, 5635, 6111, 6615, 6693, 7245, 7275, 7857, 9315, 10143, 10185, 11025, 11155, 12075, 13041, 13095, 14175, 14259, 15525, 15617, 16905, 16975, 18333, 19845, 20079, 21735, 21825, 23765, 28175, 30429, 30555, 33075, 33465, 36225, 39285, 42777, 46575, 46851, 50715, 50925, 54999, 55775, 60237, 65205, 65475, 71295, 78085, 84525, 91287, 91665, 99225, 100395, 108675, 109319, 118825, 128331, 140553, 152145, 152775, 167325, 180711, 196425, 213885, 234255, 253575, 274995, 301185, 326025, 327957, 356475, 384993, 390425, 421659, 456435, 458325, 501975, 546595, 641655, 702765, 760725, 903555, 983871, 1069425, 1171275, 1264977, 1374975, 1505925, 1639785, 1924965, 2108295, 2282175, 2732975, 2951613, 3208275, 3513825, 4517775, 4919355, 6324885, 8198925, 8854839, 9624825, 10541475, 14758065, 24596775, 31624425, 44274195, 73790325, 221370975]

約数ペア:

[(1, 221370975), (3, 73790325), (5, 44274195), (7, 31624425), (9, 24596775), (15, 14758065), (21, 10541475), (23, 9624825), (25, 8854839), (27, 8198925), (35, 6324885), (45, 4919355), (49, 4517775), (63, 3513825), (69, 3208275), (75, 2951613), (81, 2732975), (97, 2282175), (105, 2108295), (115, 1924965), (135, 1639785), (147, 1505925), (161, 1374975), (175, 1264977), (189, 1171275), (207, 1069425), (225, 983871), (245, 903555), (291, 760725), (315, 702765), (345, 641655), (405, 546595), (441, 501975), (483, 458325), (485, 456435), (525, 421659), (567, 390425), (575, 384993), (621, 356475), (675, 327957), (679, 326025), (735, 301185), (805, 274995), (873, 253575), (945, 234255), (1035, 213885), (1127, 196425), (1225, 180711), (1323, 167325), (1449, 152775), (1455, 152145), (1575, 140553), (1725, 128331), (1863, 118825), (2025, 109319), (2037, 108675), (2205, 100395), (2231, 99225), (2415, 91665), (2425, 91287), (2619, 84525), (2835, 78085), (3105, 71295), (3381, 65475), (3395, 65205), (3675, 60237), (3969, 55775), (4025, 54999), (4347, 50925), (4365, 50715), (4725, 46851), (4753, 46575), (5175, 42777), (5635, 39285), (6111, 36225), (6615, 33465), (6693, 33075), (7245, 30555), (7275, 30429), (7857, 28175), (9315, 23765), (10143, 21825), (10185, 21735), (11025, 20079), (11155, 19845), (12075, 18333), (13041, 16975), (13095, 16905), (14175, 15617), (14259, 15525)]