420171490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{251}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 826277760

約数和(自身を除く): 406106270

約数列:

[1, 2, 5, 10, 17, 34, 43, 85, 86, 170, 215, 229, 251, 430, 458, 502, 731, 1145, 1255, 1462, 2290, 2510, 3655, 3893, 4267, 7310, 7786, 8534, 9847, 10793, 19465, 19694, 21335, 21586, 38930, 42670, 49235, 53965, 57479, 98470, 107930, 114958, 167399, 183481, 287395, 334798, 366962, 574790, 836995, 917405, 977143, 1673990, 1834810, 1954286, 2471597, 4885715, 4943194, 9771430, 12357985, 24715970, 42017149, 84034298, 210085745, 420171490]

約数ペア:

[(1, 420171490), (2, 210085745), (5, 84034298), (10, 42017149), (17, 24715970), (34, 12357985), (43, 9771430), (85, 4943194), (86, 4885715), (170, 2471597), (215, 1954286), (229, 1834810), (251, 1673990), (430, 977143), (458, 917405), (502, 836995), (731, 574790), (1145, 366962), (1255, 334798), (1462, 287395), (2290, 183481), (2510, 167399), (3655, 114958), (3893, 107930), (4267, 98470), (7310, 57479), (7786, 53965), (8534, 49235), (9847, 42670), (10793, 38930), (19465, 21586), (19694, 21335)]