19697860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 96

約数和(自身を含む): 51932160

約数和(自身を除く): 32234300

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 79, 91, 130, 137, 140, 158, 182, 260, 274, 316, 364, 395, 455, 548, 553, 685, 790, 910, 959, 1027, 1106, 1370, 1580, 1781, 1820, 1918, 2054, 2212, 2740, 2765, 3562, 3836, 4108, 4795, 5135, 5530, 7124, 7189, 8905, 9590, 10270, 10823, 11060, 12467, 14378, 17810, 19180, 20540, 21646, 24934, 28756, 35620, 35945, 43292, 49868, 54115, 62335, 71890, 75761, 108230, 124670, 140699, 143780, 151522, 216460, 249340, 281398, 303044, 378805, 562796, 703495, 757610, 984893, 1406990, 1515220, 1969786, 2813980, 3939572, 4924465, 9848930, 19697860]

約数ペア:

[(1, 19697860), (2, 9848930), (4, 4924465), (5, 3939572), (7, 2813980), (10, 1969786), (13, 1515220), (14, 1406990), (20, 984893), (26, 757610), (28, 703495), (35, 562796), (52, 378805), (65, 303044), (70, 281398), (79, 249340), (91, 216460), (130, 151522), (137, 143780), (140, 140699), (158, 124670), (182, 108230), (260, 75761), (274, 71890), (316, 62335), (364, 54115), (395, 49868), (455, 43292), (548, 35945), (553, 35620), (685, 28756), (790, 24934), (910, 21646), (959, 20540), (1027, 19180), (1106, 17810), (1370, 14378), (1580, 12467), (1781, 11060), (1820, 10823), (1918, 10270), (2054, 9590), (2212, 8905), (2740, 7189), (2765, 7124), (3562, 5530), (3836, 5135), (4108, 4795)]