21965970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{373}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 57302784

約数和(自身を除く): 35336814

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 151, 195, 302, 373, 390, 453, 746, 755, 906, 1119, 1510, 1865, 1963, 2238, 2265, 3730, 3926, 4530, 4849, 5595, 5889, 9698, 9815, 11190, 11778, 14547, 19630, 24245, 29094, 29445, 48490, 56323, 58890, 72735, 112646, 145470, 168969, 281615, 337938, 563230, 732199, 844845, 1464398, 1689690, 2196597, 3660995, 4393194, 7321990, 10982985, 21965970]

約数ペア:

[(1, 21965970), (2, 10982985), (3, 7321990), (5, 4393194), (6, 3660995), (10, 2196597), (13, 1689690), (15, 1464398), (26, 844845), (30, 732199), (39, 563230), (65, 337938), (78, 281615), (130, 168969), (151, 145470), (195, 112646), (302, 72735), (373, 58890), (390, 56323), (453, 48490), (746, 29445), (755, 29094), (906, 24245), (1119, 19630), (1510, 14547), (1865, 11778), (1963, 11190), (2238, 9815), (2265, 9698), (3730, 5889), (3926, 5595), (4530, 4849)]