19812900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{211}}^1\times {\mathrm{313}}^1$

素因数の和:541

約数の個数: 72

約数和(自身を含む): 57781024

約数和(自身を除く): 37968124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 211, 300, 313, 422, 626, 633, 844, 939, 1055, 1252, 1266, 1565, 1878, 2110, 2532, 3130, 3165, 3756, 4220, 4695, 5275, 6260, 6330, 7825, 9390, 10550, 12660, 15650, 15825, 18780, 21100, 23475, 31300, 31650, 46950, 63300, 66043, 93900, 132086, 198129, 264172, 330215, 396258, 660430, 792516, 990645, 1320860, 1651075, 1981290, 3302150, 3962580, 4953225, 6604300, 9906450, 19812900]

約数ペア:

[(1, 19812900), (2, 9906450), (3, 6604300), (4, 4953225), (5, 3962580), (6, 3302150), (10, 1981290), (12, 1651075), (15, 1320860), (20, 990645), (25, 792516), (30, 660430), (50, 396258), (60, 330215), (75, 264172), (100, 198129), (150, 132086), (211, 93900), (300, 66043), (313, 63300), (422, 46950), (626, 31650), (633, 31300), (844, 23475), (939, 21100), (1055, 18780), (1252, 15825), (1266, 15650), (1565, 12660), (1878, 10550), (2110, 9390), (2532, 7825), (3130, 6330), (3165, 6260), (3756, 5275), (4220, 4695)]