15138840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 49533120

約数和(自身を除く): 34394280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 41, 51, 60, 68, 82, 85, 102, 120, 123, 136, 164, 170, 181, 204, 205, 246, 255, 328, 340, 362, 408, 410, 492, 510, 543, 615, 680, 697, 724, 820, 905, 984, 1020, 1086, 1230, 1394, 1448, 1640, 1810, 2040, 2091, 2172, 2460, 2715, 2788, 3077, 3485, 3620, 4182, 4344, 4920, 5430, 5576, 6154, 6970, 7240, 7421, 8364, 9231, 10455, 10860, 12308, 13940, 14842, 15385, 16728, 18462, 20910, 21720, 22263, 24616, 27880, 29684, 30770, 36924, 37105, 41820, 44526, 46155, 59368, 61540, 73848, 74210, 83640, 89052, 92310, 111315, 123080, 126157, 148420, 178104, 184620, 222630, 252314, 296840, 369240, 378471, 445260, 504628, 630785, 756942, 890520, 1009256, 1261570, 1513884, 1892355, 2523140, 3027768, 3784710, 5046280, 7569420, 15138840]

約数ペア:

[(1, 15138840), (2, 7569420), (3, 5046280), (4, 3784710), (5, 3027768), (6, 2523140), (8, 1892355), (10, 1513884), (12, 1261570), (15, 1009256), (17, 890520), (20, 756942), (24, 630785), (30, 504628), (34, 445260), (40, 378471), (41, 369240), (51, 296840), (60, 252314), (68, 222630), (82, 184620), (85, 178104), (102, 148420), (120, 126157), (123, 123080), (136, 111315), (164, 92310), (170, 89052), (181, 83640), (204, 74210), (205, 73848), (246, 61540), (255, 59368), (328, 46155), (340, 44526), (362, 41820), (408, 37105), (410, 36924), (492, 30770), (510, 29684), (543, 27880), (615, 24616), (680, 22263), (697, 21720), (724, 20910), (820, 18462), (905, 16728), (984, 15385), (1020, 14842), (1086, 13940), (1230, 12308), (1394, 10860), (1448, 10455), (1640, 9231), (1810, 8364), (2040, 7421), (2091, 7240), (2172, 6970), (2460, 6154), (2715, 5576), (2788, 5430), (3077, 4920), (3485, 4344), (3620, 4182)]