28286895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 62705664

約数和(自身を除く): 34418769

約数列:

[1, 3, 5, 7, 13, 15, 17, 21, 23, 35, 39, 51, 53, 65, 69, 85, 91, 105, 115, 119, 159, 161, 195, 221, 255, 265, 273, 299, 345, 357, 371, 391, 455, 483, 595, 663, 689, 795, 805, 897, 901, 1105, 1113, 1173, 1219, 1365, 1495, 1547, 1785, 1855, 1955, 2067, 2093, 2415, 2703, 2737, 3315, 3445, 3657, 4485, 4505, 4641, 4823, 5083, 5565, 5865, 6095, 6279, 6307, 7735, 8211, 8533, 10335, 10465, 11713, 13515, 13685, 14469, 15249, 15847, 18285, 18921, 20723, 23205, 24115, 25415, 25599, 31395, 31535, 35139, 35581, 41055, 42665, 47541, 58565, 62169, 72345, 76245, 79235, 81991, 94605, 103615, 106743, 110929, 127995, 145061, 175695, 177905, 237705, 245973, 269399, 310845, 332787, 409955, 435183, 533715, 554645, 725305, 808197, 1229865, 1346995, 1663935, 1885793, 2175915, 4040985, 5657379, 9428965, 28286895]

約数ペア:

[(1, 28286895), (3, 9428965), (5, 5657379), (7, 4040985), (13, 2175915), (15, 1885793), (17, 1663935), (21, 1346995), (23, 1229865), (35, 808197), (39, 725305), (51, 554645), (53, 533715), (65, 435183), (69, 409955), (85, 332787), (91, 310845), (105, 269399), (115, 245973), (119, 237705), (159, 177905), (161, 175695), (195, 145061), (221, 127995), (255, 110929), (265, 106743), (273, 103615), (299, 94605), (345, 81991), (357, 79235), (371, 76245), (391, 72345), (455, 62169), (483, 58565), (595, 47541), (663, 42665), (689, 41055), (795, 35581), (805, 35139), (897, 31535), (901, 31395), (1105, 25599), (1113, 25415), (1173, 24115), (1219, 23205), (1365, 20723), (1495, 18921), (1547, 18285), (1785, 15847), (1855, 15249), (1955, 14469), (2067, 13685), (2093, 13515), (2415, 11713), (2703, 10465), (2737, 10335), (3315, 8533), (3445, 8211), (3657, 7735), (4485, 6307), (4505, 6279), (4641, 6095), (4823, 5865), (5083, 5565)]