20855430

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:390

約数の個数: 96

約数和(自身を含む): 58934304

約数和(自身を除く): 38078874

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 43, 45, 51, 85, 86, 90, 102, 129, 153, 170, 215, 255, 258, 306, 317, 387, 430, 510, 634, 645, 731, 765, 774, 951, 1290, 1462, 1530, 1585, 1902, 1935, 2193, 2853, 3170, 3655, 3870, 4386, 4755, 5389, 5706, 6579, 7310, 9510, 10778, 10965, 13158, 13631, 14265, 16167, 21930, 26945, 27262, 28530, 32334, 32895, 40893, 48501, 53890, 65790, 68155, 80835, 81786, 97002, 122679, 136310, 161670, 204465, 231727, 242505, 245358, 408930, 463454, 485010, 613395, 695181, 1158635, 1226790, 1390362, 2085543, 2317270, 3475905, 4171086, 6951810, 10427715, 20855430]

約数ペア:

[(1, 20855430), (2, 10427715), (3, 6951810), (5, 4171086), (6, 3475905), (9, 2317270), (10, 2085543), (15, 1390362), (17, 1226790), (18, 1158635), (30, 695181), (34, 613395), (43, 485010), (45, 463454), (51, 408930), (85, 245358), (86, 242505), (90, 231727), (102, 204465), (129, 161670), (153, 136310), (170, 122679), (215, 97002), (255, 81786), (258, 80835), (306, 68155), (317, 65790), (387, 53890), (430, 48501), (510, 40893), (634, 32895), (645, 32334), (731, 28530), (765, 27262), (774, 26945), (951, 21930), (1290, 16167), (1462, 14265), (1530, 13631), (1585, 13158), (1902, 10965), (1935, 10778), (2193, 9510), (2853, 7310), (3170, 6579), (3655, 5706), (3870, 5389), (4386, 4755)]