21921390

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:306

約数の個数: 96

約数和(自身を含む): 60821280

約数和(自身を除く): 38899890

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 37, 45, 58, 74, 87, 90, 111, 145, 174, 185, 222, 227, 261, 290, 333, 370, 435, 454, 522, 555, 666, 681, 870, 1073, 1110, 1135, 1305, 1362, 1665, 2043, 2146, 2270, 2610, 3219, 3330, 3405, 4086, 5365, 6438, 6583, 6810, 8399, 9657, 10215, 10730, 13166, 16095, 16798, 19314, 19749, 20430, 25197, 32190, 32915, 39498, 41995, 48285, 50394, 59247, 65830, 75591, 83990, 96570, 98745, 118494, 125985, 151182, 197490, 243571, 251970, 296235, 377955, 487142, 592470, 730713, 755910, 1217855, 1461426, 2192139, 2435710, 3653565, 4384278, 7307130, 10960695, 21921390]

約数ペア:

[(1, 21921390), (2, 10960695), (3, 7307130), (5, 4384278), (6, 3653565), (9, 2435710), (10, 2192139), (15, 1461426), (18, 1217855), (29, 755910), (30, 730713), (37, 592470), (45, 487142), (58, 377955), (74, 296235), (87, 251970), (90, 243571), (111, 197490), (145, 151182), (174, 125985), (185, 118494), (222, 98745), (227, 96570), (261, 83990), (290, 75591), (333, 65830), (370, 59247), (435, 50394), (454, 48285), (522, 41995), (555, 39498), (666, 32915), (681, 32190), (870, 25197), (1073, 20430), (1110, 19749), (1135, 19314), (1305, 16798), (1362, 16095), (1665, 13166), (2043, 10730), (2146, 10215), (2270, 9657), (2610, 8399), (3219, 6810), (3330, 6583), (3405, 6438), (4086, 5365)]