21881250

素因数分解:

$2^1\times 3^2\times 5^5\times {\mathrm{389}}^1$

素因数の和:422

約数の個数: 72

約数和(自身を含む): 59410260

約数和(自身を除く): 37529010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 125, 150, 225, 250, 375, 389, 450, 625, 750, 778, 1125, 1167, 1250, 1875, 1945, 2250, 2334, 3125, 3501, 3750, 3890, 5625, 5835, 6250, 7002, 9375, 9725, 11250, 11670, 17505, 18750, 19450, 28125, 29175, 35010, 48625, 56250, 58350, 87525, 97250, 145875, 175050, 243125, 291750, 437625, 486250, 729375, 875250, 1215625, 1458750, 2188125, 2431250, 3646875, 4376250, 7293750, 10940625, 21881250]

約数ペア:

[(1, 21881250), (2, 10940625), (3, 7293750), (5, 4376250), (6, 3646875), (9, 2431250), (10, 2188125), (15, 1458750), (18, 1215625), (25, 875250), (30, 729375), (45, 486250), (50, 437625), (75, 291750), (90, 243125), (125, 175050), (150, 145875), (225, 97250), (250, 87525), (375, 58350), (389, 56250), (450, 48625), (625, 35010), (750, 29175), (778, 28125), (1125, 19450), (1167, 18750), (1250, 17505), (1875, 11670), (1945, 11250), (2250, 9725), (2334, 9375), (3125, 7002), (3501, 6250), (3750, 5835), (3890, 5625)]