20809020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{887}}^1$

素因数の和:939

約数の個数: 96

約数和(自身を含む): 64447488

約数和(自身を除く): 43638468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 46, 51, 60, 68, 69, 85, 92, 102, 115, 138, 170, 204, 230, 255, 276, 340, 345, 391, 460, 510, 690, 782, 887, 1020, 1173, 1380, 1564, 1774, 1955, 2346, 2661, 3548, 3910, 4435, 4692, 5322, 5865, 7820, 8870, 10644, 11730, 13305, 15079, 17740, 20401, 23460, 26610, 30158, 40802, 45237, 53220, 60316, 61203, 75395, 81604, 90474, 102005, 122406, 150790, 180948, 204010, 226185, 244812, 301580, 306015, 346817, 408020, 452370, 612030, 693634, 904740, 1040451, 1224060, 1387268, 1734085, 2080902, 3468170, 4161804, 5202255, 6936340, 10404510, 20809020]

約数ペア:

[(1, 20809020), (2, 10404510), (3, 6936340), (4, 5202255), (5, 4161804), (6, 3468170), (10, 2080902), (12, 1734085), (15, 1387268), (17, 1224060), (20, 1040451), (23, 904740), (30, 693634), (34, 612030), (46, 452370), (51, 408020), (60, 346817), (68, 306015), (69, 301580), (85, 244812), (92, 226185), (102, 204010), (115, 180948), (138, 150790), (170, 122406), (204, 102005), (230, 90474), (255, 81604), (276, 75395), (340, 61203), (345, 60316), (391, 53220), (460, 45237), (510, 40802), (690, 30158), (782, 26610), (887, 23460), (1020, 20401), (1173, 17740), (1380, 15079), (1564, 13305), (1774, 11730), (1955, 10644), (2346, 8870), (2661, 7820), (3548, 5865), (3910, 5322), (4435, 4692)]