31721040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3389}}^1$

素因数の和:3421

約数の個数: 120

約数和(自身を含む): 114758280

約数和(自身を除く): 83037240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2340, 3120, 3389, 4680, 6778, 9360, 10167, 13556, 16945, 20334, 27112, 30501, 33890, 40668, 44057, 50835, 54224, 61002, 67780, 81336, 88114, 101670, 122004, 132171, 135560, 152505, 162672, 176228, 203340, 220285, 244008, 264342, 271120, 305010, 352456, 396513, 406680, 440570, 488016, 528684, 610020, 660855, 704912, 793026, 813360, 881140, 1057368, 1220040, 1321710, 1586052, 1762280, 1982565, 2114736, 2440080, 2643420, 3172104, 3524560, 3965130, 5286840, 6344208, 7930260, 10573680, 15860520, 31721040]

約数ペア:

[(1, 31721040), (2, 15860520), (3, 10573680), (4, 7930260), (5, 6344208), (6, 5286840), (8, 3965130), (9, 3524560), (10, 3172104), (12, 2643420), (13, 2440080), (15, 2114736), (16, 1982565), (18, 1762280), (20, 1586052), (24, 1321710), (26, 1220040), (30, 1057368), (36, 881140), (39, 813360), (40, 793026), (45, 704912), (48, 660855), (52, 610020), (60, 528684), (65, 488016), (72, 440570), (78, 406680), (80, 396513), (90, 352456), (104, 305010), (117, 271120), (120, 264342), (130, 244008), (144, 220285), (156, 203340), (180, 176228), (195, 162672), (208, 152505), (234, 135560), (240, 132171), (260, 122004), (312, 101670), (360, 88114), (390, 81336), (468, 67780), (520, 61002), (585, 54224), (624, 50835), (720, 44057), (780, 40668), (936, 33890), (1040, 30501), (1170, 27112), (1560, 20334), (1872, 16945), (2340, 13556), (3120, 10167), (3389, 9360), (4680, 6778)]