19896730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 43296768

約数和(自身を除く): 23400038

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 53, 62, 70, 106, 155, 173, 217, 265, 310, 346, 371, 434, 530, 742, 865, 1085, 1211, 1643, 1730, 1855, 2170, 2422, 3286, 3710, 5363, 6055, 8215, 9169, 10726, 11501, 12110, 16430, 18338, 23002, 26815, 37541, 45845, 53630, 57505, 64183, 75082, 91690, 115010, 128366, 187705, 284239, 320915, 375410, 568478, 641830, 1421195, 1989673, 2842390, 3979346, 9948365, 19896730]

約数ペア:

[(1, 19896730), (2, 9948365), (5, 3979346), (7, 2842390), (10, 1989673), (14, 1421195), (31, 641830), (35, 568478), (53, 375410), (62, 320915), (70, 284239), (106, 187705), (155, 128366), (173, 115010), (217, 91690), (265, 75082), (310, 64183), (346, 57505), (371, 53630), (434, 45845), (530, 37541), (742, 26815), (865, 23002), (1085, 18338), (1211, 16430), (1643, 12110), (1730, 11501), (1855, 10726), (2170, 9169), (2422, 8215), (3286, 6055), (3710, 5363)]