18685550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 42184800

約数和(自身を除く): 23499250

約数列:

[1, 2, 5, 10, 13, 17, 19, 25, 26, 34, 38, 50, 65, 85, 89, 95, 130, 170, 178, 190, 221, 247, 323, 325, 425, 442, 445, 475, 494, 646, 650, 850, 890, 950, 1105, 1157, 1235, 1513, 1615, 1691, 2210, 2225, 2314, 2470, 3026, 3230, 3382, 4199, 4450, 5525, 5785, 6175, 7565, 8075, 8398, 8455, 11050, 11570, 12350, 15130, 16150, 16910, 19669, 20995, 21983, 28747, 28925, 37825, 39338, 41990, 42275, 43966, 57494, 57850, 75650, 84550, 98345, 104975, 109915, 143735, 196690, 209950, 219830, 287470, 373711, 491725, 549575, 718675, 747422, 983450, 1099150, 1437350, 1868555, 3737110, 9342775, 18685550]

約数ペア:

[(1, 18685550), (2, 9342775), (5, 3737110), (10, 1868555), (13, 1437350), (17, 1099150), (19, 983450), (25, 747422), (26, 718675), (34, 549575), (38, 491725), (50, 373711), (65, 287470), (85, 219830), (89, 209950), (95, 196690), (130, 143735), (170, 109915), (178, 104975), (190, 98345), (221, 84550), (247, 75650), (323, 57850), (325, 57494), (425, 43966), (442, 42275), (445, 41990), (475, 39338), (494, 37825), (646, 28925), (650, 28747), (850, 21983), (890, 20995), (950, 19669), (1105, 16910), (1157, 16150), (1235, 15130), (1513, 12350), (1615, 11570), (1691, 11050), (2210, 8455), (2225, 8398), (2314, 8075), (2470, 7565), (3026, 6175), (3230, 5785), (3382, 5525), (4199, 4450)]