21284900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2339}}^1$

素因数の和:2373

約数の個数: 72

約数和(自身を含む): 56871360

約数和(自身を除く): 35586460

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2275, 2339, 4550, 4678, 9100, 9356, 11695, 16373, 23390, 30407, 32746, 46780, 58475, 60814, 65492, 81865, 116950, 121628, 152035, 163730, 212849, 233900, 304070, 327460, 409325, 425698, 608140, 760175, 818650, 851396, 1064245, 1520350, 1637300, 2128490, 3040700, 4256980, 5321225, 10642450, 21284900]

約数ペア:

[(1, 21284900), (2, 10642450), (4, 5321225), (5, 4256980), (7, 3040700), (10, 2128490), (13, 1637300), (14, 1520350), (20, 1064245), (25, 851396), (26, 818650), (28, 760175), (35, 608140), (50, 425698), (52, 409325), (65, 327460), (70, 304070), (91, 233900), (100, 212849), (130, 163730), (140, 152035), (175, 121628), (182, 116950), (260, 81865), (325, 65492), (350, 60814), (364, 58475), (455, 46780), (650, 32746), (700, 30407), (910, 23390), (1300, 16373), (1820, 11695), (2275, 9356), (2339, 9100), (4550, 4678)]