81397680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3727}}^1$

素因数の和:3763

約数の個数: 160

約数和(自身を含む): 310646784

約数和(自身を除く): 229249104

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 2184, 2730, 3120, 3640, 3727, 4368, 5460, 7280, 7454, 10920, 11181, 14908, 18635, 21840, 22362, 26089, 29816, 37270, 44724, 48451, 52178, 55905, 59632, 74540, 78267, 89448, 96902, 104356, 111810, 130445, 145353, 149080, 156534, 178896, 193804, 208712, 223620, 242255, 260890, 290706, 298160, 313068, 339157, 387608, 391335, 417424, 447240, 484510, 521780, 581412, 626136, 678314, 726765, 775216, 782670, 894480, 969020, 1017471, 1043560, 1162824, 1252272, 1356628, 1453530, 1565340, 1695785, 1938040, 2034942, 2087120, 2325648, 2713256, 2907060, 3130680, 3391570, 3876080, 4069884, 5087355, 5426512, 5814120, 6261360, 6783140, 8139768, 10174710, 11628240, 13566280, 16279536, 20349420, 27132560, 40698840, 81397680]

約数ペア:

[(1, 81397680), (2, 40698840), (3, 27132560), (4, 20349420), (5, 16279536), (6, 13566280), (7, 11628240), (8, 10174710), (10, 8139768), (12, 6783140), (13, 6261360), (14, 5814120), (15, 5426512), (16, 5087355), (20, 4069884), (21, 3876080), (24, 3391570), (26, 3130680), (28, 2907060), (30, 2713256), (35, 2325648), (39, 2087120), (40, 2034942), (42, 1938040), (48, 1695785), (52, 1565340), (56, 1453530), (60, 1356628), (65, 1252272), (70, 1162824), (78, 1043560), (80, 1017471), (84, 969020), (91, 894480), (104, 782670), (105, 775216), (112, 726765), (120, 678314), (130, 626136), (140, 581412), (156, 521780), (168, 484510), (182, 447240), (195, 417424), (208, 391335), (210, 387608), (240, 339157), (260, 313068), (273, 298160), (280, 290706), (312, 260890), (336, 242255), (364, 223620), (390, 208712), (420, 193804), (455, 178896), (520, 156534), (546, 149080), (560, 145353), (624, 130445), (728, 111810), (780, 104356), (840, 96902), (910, 89448), (1040, 78267), (1092, 74540), (1365, 59632), (1456, 55905), (1560, 52178), (1680, 48451), (1820, 44724), (2184, 37270), (2730, 29816), (3120, 26089), (3640, 22362), (3727, 21840), (4368, 18635), (5460, 14908), (7280, 11181), (7454, 10920)]