81011820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{397}}^1$

素因数の和:607

約数の個数: 96

約数和(自身を含む): 240710400

約数和(自身を除く): 159698580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 179, 190, 228, 285, 358, 380, 397, 537, 570, 716, 794, 895, 1074, 1140, 1191, 1588, 1790, 1985, 2148, 2382, 2685, 3401, 3580, 3970, 4764, 5370, 5955, 6802, 7543, 7940, 10203, 10740, 11910, 13604, 15086, 17005, 20406, 22629, 23820, 30172, 34010, 37715, 40812, 45258, 51015, 68020, 71063, 75430, 90516, 102030, 113145, 142126, 150860, 204060, 213189, 226290, 284252, 355315, 426378, 452580, 710630, 852756, 1065945, 1350197, 1421260, 2131890, 2700394, 4050591, 4263780, 5400788, 6750985, 8101182, 13501970, 16202364, 20252955, 27003940, 40505910, 81011820]

約数ペア:

[(1, 81011820), (2, 40505910), (3, 27003940), (4, 20252955), (5, 16202364), (6, 13501970), (10, 8101182), (12, 6750985), (15, 5400788), (19, 4263780), (20, 4050591), (30, 2700394), (38, 2131890), (57, 1421260), (60, 1350197), (76, 1065945), (95, 852756), (114, 710630), (179, 452580), (190, 426378), (228, 355315), (285, 284252), (358, 226290), (380, 213189), (397, 204060), (537, 150860), (570, 142126), (716, 113145), (794, 102030), (895, 90516), (1074, 75430), (1140, 71063), (1191, 68020), (1588, 51015), (1790, 45258), (1985, 40812), (2148, 37715), (2382, 34010), (2685, 30172), (3401, 23820), (3580, 22629), (3970, 20406), (4764, 17005), (5370, 15086), (5955, 13604), (6802, 11910), (7543, 10740), (7940, 10203)]