21138314720

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{224303}}^1$

素因数の和:224368

約数の個数: 96

約数和(自身を含む): 54263623680

約数和(自身を除く): 33125308960

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 32, 38, 40, 62, 76, 80, 95, 124, 152, 155, 160, 190, 248, 304, 310, 380, 496, 589, 608, 620, 760, 992, 1178, 1240, 1520, 2356, 2480, 2945, 3040, 4712, 4960, 5890, 9424, 11780, 18848, 23560, 47120, 94240, 224303, 448606, 897212, 1121515, 1794424, 2243030, 3588848, 4261757, 4486060, 6953393, 7177696, 8523514, 8972120, 13906786, 17047028, 17944240, 21308785, 27813572, 34094056, 34766965, 35888480, 42617570, 55627144, 68188112, 69533930, 85235140, 111254288, 132114467, 136376224, 139067860, 170470280, 222508576, 264228934, 278135720, 340940560, 528457868, 556271440, 660572335, 681881120, 1056915736, 1112542880, 1321144670, 2113831472, 2642289340, 4227662944, 5284578680, 10569157360, 21138314720]

約数ペア:

[(1, 21138314720), (2, 10569157360), (4, 5284578680), (5, 4227662944), (8, 2642289340), (10, 2113831472), (16, 1321144670), (19, 1112542880), (20, 1056915736), (31, 681881120), (32, 660572335), (38, 556271440), (40, 528457868), (62, 340940560), (76, 278135720), (80, 264228934), (95, 222508576), (124, 170470280), (152, 139067860), (155, 136376224), (160, 132114467), (190, 111254288), (248, 85235140), (304, 69533930), (310, 68188112), (380, 55627144), (496, 42617570), (589, 35888480), (608, 34766965), (620, 34094056), (760, 27813572), (992, 21308785), (1178, 17944240), (1240, 17047028), (1520, 13906786), (2356, 8972120), (2480, 8523514), (2945, 7177696), (3040, 6953393), (4712, 4486060), (4960, 4261757), (5890, 3588848), (9424, 2243030), (11780, 1794424), (18848, 1121515), (23560, 897212), (47120, 448606), (94240, 224303)]