21704580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:246

約数の個数: 144

約数和(自身を含む): 71823024

約数和(自身を除く): 50118444

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 41, 45, 51, 60, 68, 82, 85, 90, 102, 123, 153, 164, 170, 173, 180, 204, 205, 246, 255, 306, 340, 346, 369, 410, 492, 510, 519, 612, 615, 692, 697, 738, 765, 820, 865, 1020, 1038, 1230, 1394, 1476, 1530, 1557, 1730, 1845, 2076, 2091, 2460, 2595, 2788, 2941, 3060, 3114, 3460, 3485, 3690, 4182, 5190, 5882, 6228, 6273, 6970, 7093, 7380, 7785, 8364, 8823, 10380, 10455, 11764, 12546, 13940, 14186, 14705, 15570, 17646, 20910, 21279, 25092, 26469, 28372, 29410, 31140, 31365, 35292, 35465, 41820, 42558, 44115, 52938, 58820, 62730, 63837, 70930, 85116, 88230, 105876, 106395, 120581, 125460, 127674, 132345, 141860, 176460, 212790, 241162, 255348, 264690, 319185, 361743, 425580, 482324, 529380, 602905, 638370, 723486, 1085229, 1205810, 1276740, 1446972, 1808715, 2170458, 2411620, 3617430, 4340916, 5426145, 7234860, 10852290, 21704580]

約数ペア:

[(1, 21704580), (2, 10852290), (3, 7234860), (4, 5426145), (5, 4340916), (6, 3617430), (9, 2411620), (10, 2170458), (12, 1808715), (15, 1446972), (17, 1276740), (18, 1205810), (20, 1085229), (30, 723486), (34, 638370), (36, 602905), (41, 529380), (45, 482324), (51, 425580), (60, 361743), (68, 319185), (82, 264690), (85, 255348), (90, 241162), (102, 212790), (123, 176460), (153, 141860), (164, 132345), (170, 127674), (173, 125460), (180, 120581), (204, 106395), (205, 105876), (246, 88230), (255, 85116), (306, 70930), (340, 63837), (346, 62730), (369, 58820), (410, 52938), (492, 44115), (510, 42558), (519, 41820), (612, 35465), (615, 35292), (692, 31365), (697, 31140), (738, 29410), (765, 28372), (820, 26469), (865, 25092), (1020, 21279), (1038, 20910), (1230, 17646), (1394, 15570), (1476, 14705), (1530, 14186), (1557, 13940), (1730, 12546), (1845, 11764), (2076, 10455), (2091, 10380), (2460, 8823), (2595, 8364), (2788, 7785), (2941, 7380), (3060, 7093), (3114, 6970), (3460, 6273), (3485, 6228), (3690, 5882), (4182, 5190)]