21237840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2269}}^1$

素因数の和:2301

約数の個数: 120

約数和(自身を含む): 76844040

約数和(自身を除く): 55606200

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, 2269, 2340, 3120, 4538, 4680, 6807, 9076, 9360, 11345, 13614, 18152, 20421, 22690, 27228, 29497, 34035, 36304, 40842, 45380, 54456, 58994, 68070, 81684, 88491, 90760, 102105, 108912, 117988, 136140, 147485, 163368, 176982, 181520, 204210, 235976, 265473, 272280, 294970, 326736, 353964, 408420, 442455, 471952, 530946, 544560, 589940, 707928, 816840, 884910, 1061892, 1179880, 1327365, 1415856, 1633680, 1769820, 2123784, 2359760, 2654730, 3539640, 4247568, 5309460, 7079280, 10618920, 21237840]

約数ペア:

[(1, 21237840), (2, 10618920), (3, 7079280), (4, 5309460), (5, 4247568), (6, 3539640), (8, 2654730), (9, 2359760), (10, 2123784), (12, 1769820), (13, 1633680), (15, 1415856), (16, 1327365), (18, 1179880), (20, 1061892), (24, 884910), (26, 816840), (30, 707928), (36, 589940), (39, 544560), (40, 530946), (45, 471952), (48, 442455), (52, 408420), (60, 353964), (65, 326736), (72, 294970), (78, 272280), (80, 265473), (90, 235976), (104, 204210), (117, 181520), (120, 176982), (130, 163368), (144, 147485), (156, 136140), (180, 117988), (195, 108912), (208, 102105), (234, 90760), (240, 88491), (260, 81684), (312, 68070), (360, 58994), (390, 54456), (468, 45380), (520, 40842), (585, 36304), (624, 34035), (720, 29497), (780, 27228), (936, 22690), (1040, 20421), (1170, 18152), (1560, 13614), (1872, 11345), (2269, 9360), (2340, 9076), (3120, 6807), (4538, 4680)]