21545160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1973}}^1$

素因数の和:2007

約数の個数: 128

約数和(自身を含む): 79591680

約数和(自身を除く): 58046520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 1973, 2184, 2730, 3640, 3946, 5460, 5919, 7892, 9865, 10920, 11838, 13811, 15784, 19730, 23676, 25649, 27622, 29595, 39460, 41433, 47352, 51298, 55244, 59190, 69055, 76947, 78920, 82866, 102596, 110488, 118380, 128245, 138110, 153894, 165732, 179543, 205192, 207165, 236760, 256490, 276220, 307788, 331464, 359086, 384735, 414330, 512980, 538629, 552440, 615576, 718172, 769470, 828660, 897715, 1025960, 1077258, 1436344, 1538940, 1657320, 1795430, 2154516, 2693145, 3077880, 3590860, 4309032, 5386290, 7181720, 10772580, 21545160]

約数ペア:

[(1, 21545160), (2, 10772580), (3, 7181720), (4, 5386290), (5, 4309032), (6, 3590860), (7, 3077880), (8, 2693145), (10, 2154516), (12, 1795430), (13, 1657320), (14, 1538940), (15, 1436344), (20, 1077258), (21, 1025960), (24, 897715), (26, 828660), (28, 769470), (30, 718172), (35, 615576), (39, 552440), (40, 538629), (42, 512980), (52, 414330), (56, 384735), (60, 359086), (65, 331464), (70, 307788), (78, 276220), (84, 256490), (91, 236760), (104, 207165), (105, 205192), (120, 179543), (130, 165732), (140, 153894), (156, 138110), (168, 128245), (182, 118380), (195, 110488), (210, 102596), (260, 82866), (273, 78920), (280, 76947), (312, 69055), (364, 59190), (390, 55244), (420, 51298), (455, 47352), (520, 41433), (546, 39460), (728, 29595), (780, 27622), (840, 25649), (910, 23676), (1092, 19730), (1365, 15784), (1560, 13811), (1820, 11838), (1973, 10920), (2184, 9865), (2730, 7892), (3640, 5919), (3946, 5460)]