320604700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:296

約数の個数: 144

約数和(自身を含む): 807135840

約数和(自身を除く): 486531140

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 25, 26, 34, 50, 52, 65, 68, 85, 89, 100, 130, 163, 170, 178, 221, 260, 325, 326, 340, 356, 425, 442, 445, 650, 652, 815, 850, 884, 890, 1105, 1157, 1300, 1513, 1630, 1700, 1780, 2119, 2210, 2225, 2314, 2771, 3026, 3260, 4075, 4238, 4420, 4450, 4628, 5525, 5542, 5785, 6052, 7565, 8150, 8476, 8900, 10595, 11050, 11084, 11570, 13855, 14507, 15130, 16300, 19669, 21190, 22100, 23140, 27710, 28925, 29014, 30260, 36023, 37825, 39338, 42380, 52975, 55420, 57850, 58028, 69275, 72046, 72535, 75650, 78676, 98345, 105950, 115700, 138550, 144092, 145070, 151300, 180115, 188591, 196690, 211900, 246619, 277100, 290140, 360230, 362675, 377182, 393380, 491725, 493238, 720460, 725350, 754364, 900575, 942955, 983450, 986476, 1233095, 1450700, 1801150, 1885910, 1966900, 2466190, 3206047, 3602300, 3771820, 4714775, 4932380, 6165475, 6412094, 9429550, 12330950, 12824188, 16030235, 18859100, 24661900, 32060470, 64120940, 80151175, 160302350, 320604700]

約数ペア:

[(1, 320604700), (2, 160302350), (4, 80151175), (5, 64120940), (10, 32060470), (13, 24661900), (17, 18859100), (20, 16030235), (25, 12824188), (26, 12330950), (34, 9429550), (50, 6412094), (52, 6165475), (65, 4932380), (68, 4714775), (85, 3771820), (89, 3602300), (100, 3206047), (130, 2466190), (163, 1966900), (170, 1885910), (178, 1801150), (221, 1450700), (260, 1233095), (325, 986476), (326, 983450), (340, 942955), (356, 900575), (425, 754364), (442, 725350), (445, 720460), (650, 493238), (652, 491725), (815, 393380), (850, 377182), (884, 362675), (890, 360230), (1105, 290140), (1157, 277100), (1300, 246619), (1513, 211900), (1630, 196690), (1700, 188591), (1780, 180115), (2119, 151300), (2210, 145070), (2225, 144092), (2314, 138550), (2771, 115700), (3026, 105950), (3260, 98345), (4075, 78676), (4238, 75650), (4420, 72535), (4450, 72046), (4628, 69275), (5525, 58028), (5542, 57850), (5785, 55420), (6052, 52975), (7565, 42380), (8150, 39338), (8476, 37825), (8900, 36023), (10595, 30260), (11050, 29014), (11084, 28925), (11570, 27710), (13855, 23140), (14507, 22100), (15130, 21190), (16300, 19669)]