21185910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:318

約数の個数: 96

約数和(自身を含む): 59540832

約数和(自身を除く): 38354922

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 61, 85, 90, 102, 122, 153, 170, 183, 227, 255, 305, 306, 366, 454, 510, 549, 610, 681, 765, 915, 1037, 1098, 1135, 1362, 1530, 1830, 2043, 2074, 2270, 2745, 3111, 3405, 3859, 4086, 5185, 5490, 6222, 6810, 7718, 9333, 10215, 10370, 11577, 13847, 15555, 18666, 19295, 20430, 23154, 27694, 31110, 34731, 38590, 41541, 46665, 57885, 69235, 69462, 83082, 93330, 115770, 124623, 138470, 173655, 207705, 235399, 249246, 347310, 415410, 470798, 623115, 706197, 1176995, 1246230, 1412394, 2118591, 2353990, 3530985, 4237182, 7061970, 10592955, 21185910]

約数ペア:

[(1, 21185910), (2, 10592955), (3, 7061970), (5, 4237182), (6, 3530985), (9, 2353990), (10, 2118591), (15, 1412394), (17, 1246230), (18, 1176995), (30, 706197), (34, 623115), (45, 470798), (51, 415410), (61, 347310), (85, 249246), (90, 235399), (102, 207705), (122, 173655), (153, 138470), (170, 124623), (183, 115770), (227, 93330), (255, 83082), (305, 69462), (306, 69235), (366, 57885), (454, 46665), (510, 41541), (549, 38590), (610, 34731), (681, 31110), (765, 27694), (915, 23154), (1037, 20430), (1098, 19295), (1135, 18666), (1362, 15555), (1530, 13847), (1830, 11577), (2043, 10370), (2074, 10215), (2270, 9333), (2745, 7718), (3111, 6810), (3405, 6222), (3859, 5490), (4086, 5185)]