678989900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:264

約数の個数: 144

約数和(自身を含む): 1619896320

約数和(自身を除く): 940906420

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 31, 46, 50, 62, 89, 92, 100, 107, 115, 124, 155, 178, 214, 230, 310, 356, 428, 445, 460, 535, 575, 620, 713, 775, 890, 1070, 1150, 1426, 1550, 1780, 2047, 2140, 2225, 2300, 2461, 2675, 2759, 2852, 3100, 3317, 3565, 4094, 4450, 4922, 5350, 5518, 6634, 7130, 8188, 8900, 9523, 9844, 10235, 10700, 11036, 12305, 13268, 13795, 14260, 16585, 17825, 19046, 20470, 24610, 27590, 33170, 35650, 38092, 40940, 47615, 49220, 51175, 55180, 61525, 63457, 66340, 68975, 71300, 76291, 82925, 95230, 102350, 123050, 126914, 137950, 152582, 165850, 190460, 204700, 219029, 238075, 246100, 253828, 275900, 295213, 305164, 317285, 331700, 381455, 438058, 476150, 590426, 634570, 762910, 876116, 952300, 1095145, 1180852, 1269140, 1476065, 1525820, 1586425, 1907275, 2190290, 2952130, 3172850, 3814550, 4380580, 5475725, 5904260, 6345700, 6789899, 7380325, 7629100, 10951450, 13579798, 14760650, 21902900, 27159596, 29521300, 33949495, 67898990, 135797980, 169747475, 339494950, 678989900]

約数ペア:

[(1, 678989900), (2, 339494950), (4, 169747475), (5, 135797980), (10, 67898990), (20, 33949495), (23, 29521300), (25, 27159596), (31, 21902900), (46, 14760650), (50, 13579798), (62, 10951450), (89, 7629100), (92, 7380325), (100, 6789899), (107, 6345700), (115, 5904260), (124, 5475725), (155, 4380580), (178, 3814550), (214, 3172850), (230, 2952130), (310, 2190290), (356, 1907275), (428, 1586425), (445, 1525820), (460, 1476065), (535, 1269140), (575, 1180852), (620, 1095145), (713, 952300), (775, 876116), (890, 762910), (1070, 634570), (1150, 590426), (1426, 476150), (1550, 438058), (1780, 381455), (2047, 331700), (2140, 317285), (2225, 305164), (2300, 295213), (2461, 275900), (2675, 253828), (2759, 246100), (2852, 238075), (3100, 219029), (3317, 204700), (3565, 190460), (4094, 165850), (4450, 152582), (4922, 137950), (5350, 126914), (5518, 123050), (6634, 102350), (7130, 95230), (8188, 82925), (8900, 76291), (9523, 71300), (9844, 68975), (10235, 66340), (10700, 63457), (11036, 61525), (12305, 55180), (13268, 51175), (13795, 49220), (14260, 47615), (16585, 40940), (17825, 38092), (19046, 35650), (20470, 33170), (24610, 27590)]