21551580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7043}}^1$

素因数の和:7075

約数の個数: 72

約数和(自身を含む): 69228432

約数和(自身を除く): 47676852

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 7043, 14086, 21129, 28172, 35215, 42258, 63387, 70430, 84516, 105645, 119731, 126774, 140860, 211290, 239462, 253548, 316935, 359193, 422580, 478924, 598655, 633870, 718386, 1077579, 1197310, 1267740, 1436772, 1795965, 2155158, 2394620, 3591930, 4310316, 5387895, 7183860, 10775790, 21551580]

約数ペア:

[(1, 21551580), (2, 10775790), (3, 7183860), (4, 5387895), (5, 4310316), (6, 3591930), (9, 2394620), (10, 2155158), (12, 1795965), (15, 1436772), (17, 1267740), (18, 1197310), (20, 1077579), (30, 718386), (34, 633870), (36, 598655), (45, 478924), (51, 422580), (60, 359193), (68, 316935), (85, 253548), (90, 239462), (102, 211290), (153, 140860), (170, 126774), (180, 119731), (204, 105645), (255, 84516), (306, 70430), (340, 63387), (510, 42258), (612, 35215), (765, 28172), (1020, 21129), (1530, 14086), (3060, 7043)]