18991680

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:364

約数の個数: 112

約数和(自身を含む): 61350144

約数和(自身を除く): 42358464

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 73, 80, 96, 120, 146, 160, 192, 219, 240, 271, 292, 320, 365, 438, 480, 542, 584, 730, 813, 876, 960, 1084, 1095, 1168, 1355, 1460, 1626, 1752, 2168, 2190, 2336, 2710, 2920, 3252, 3504, 4065, 4336, 4380, 4672, 5420, 5840, 6504, 7008, 8130, 8672, 8760, 10840, 11680, 13008, 14016, 16260, 17344, 17520, 19783, 21680, 23360, 26016, 32520, 35040, 39566, 43360, 52032, 59349, 65040, 70080, 79132, 86720, 98915, 118698, 130080, 158264, 197830, 237396, 260160, 296745, 316528, 395660, 474792, 593490, 633056, 791320, 949584, 1186980, 1266112, 1582640, 1899168, 2373960, 3165280, 3798336, 4747920, 6330560, 9495840, 18991680]

約数ペア:

[(1, 18991680), (2, 9495840), (3, 6330560), (4, 4747920), (5, 3798336), (6, 3165280), (8, 2373960), (10, 1899168), (12, 1582640), (15, 1266112), (16, 1186980), (20, 949584), (24, 791320), (30, 633056), (32, 593490), (40, 474792), (48, 395660), (60, 316528), (64, 296745), (73, 260160), (80, 237396), (96, 197830), (120, 158264), (146, 130080), (160, 118698), (192, 98915), (219, 86720), (240, 79132), (271, 70080), (292, 65040), (320, 59349), (365, 52032), (438, 43360), (480, 39566), (542, 35040), (584, 32520), (730, 26016), (813, 23360), (876, 21680), (960, 19783), (1084, 17520), (1095, 17344), (1168, 16260), (1355, 14016), (1460, 13008), (1626, 11680), (1752, 10840), (2168, 8760), (2190, 8672), (2336, 8130), (2710, 7008), (2920, 6504), (3252, 5840), (3504, 5420), (4065, 4672), (4336, 4380)]