31228020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:454

約数の個数: 144

約数和(自身を含む): 104307840

約数和(自身を除く): 73079820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 23, 30, 36, 38, 45, 46, 57, 60, 69, 76, 90, 92, 95, 114, 115, 138, 171, 180, 190, 207, 228, 230, 276, 285, 342, 345, 380, 397, 414, 437, 460, 570, 684, 690, 794, 828, 855, 874, 1035, 1140, 1191, 1311, 1380, 1588, 1710, 1748, 1985, 2070, 2185, 2382, 2622, 3420, 3573, 3933, 3970, 4140, 4370, 4764, 5244, 5955, 6555, 7146, 7543, 7866, 7940, 8740, 9131, 11910, 13110, 14292, 15086, 15732, 17865, 18262, 19665, 22629, 23820, 26220, 27393, 30172, 35730, 36524, 37715, 39330, 45258, 45655, 54786, 67887, 71460, 75430, 78660, 82179, 90516, 91310, 109572, 113145, 135774, 136965, 150860, 164358, 173489, 182620, 226290, 271548, 273930, 328716, 339435, 346978, 410895, 452580, 520467, 547860, 678870, 693956, 821790, 867445, 1040934, 1357740, 1561401, 1643580, 1734890, 2081868, 2602335, 3122802, 3469780, 5204670, 6245604, 7807005, 10409340, 15614010, 31228020]

約数ペア:

[(1, 31228020), (2, 15614010), (3, 10409340), (4, 7807005), (5, 6245604), (6, 5204670), (9, 3469780), (10, 3122802), (12, 2602335), (15, 2081868), (18, 1734890), (19, 1643580), (20, 1561401), (23, 1357740), (30, 1040934), (36, 867445), (38, 821790), (45, 693956), (46, 678870), (57, 547860), (60, 520467), (69, 452580), (76, 410895), (90, 346978), (92, 339435), (95, 328716), (114, 273930), (115, 271548), (138, 226290), (171, 182620), (180, 173489), (190, 164358), (207, 150860), (228, 136965), (230, 135774), (276, 113145), (285, 109572), (342, 91310), (345, 90516), (380, 82179), (397, 78660), (414, 75430), (437, 71460), (460, 67887), (570, 54786), (684, 45655), (690, 45258), (794, 39330), (828, 37715), (855, 36524), (874, 35730), (1035, 30172), (1140, 27393), (1191, 26220), (1311, 23820), (1380, 22629), (1588, 19665), (1710, 18262), (1748, 17865), (1985, 15732), (2070, 15086), (2185, 14292), (2382, 13110), (2622, 11910), (3420, 9131), (3573, 8740), (3933, 7940), (3970, 7866), (4140, 7543), (4370, 7146), (4764, 6555), (5244, 5955)]