21172680

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:691

約数の個数: 96

約数和(自身を含む): 69600960

約数和(自身を除く): 48428280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 103, 120, 180, 206, 309, 360, 412, 515, 571, 618, 824, 927, 1030, 1142, 1236, 1545, 1713, 1854, 2060, 2284, 2472, 2855, 3090, 3426, 3708, 4120, 4568, 4635, 5139, 5710, 6180, 6852, 7416, 8565, 9270, 10278, 11420, 12360, 13704, 17130, 18540, 20556, 22840, 25695, 34260, 37080, 41112, 51390, 58813, 68520, 102780, 117626, 176439, 205560, 235252, 294065, 352878, 470504, 529317, 588130, 705756, 882195, 1058634, 1176260, 1411512, 1764390, 2117268, 2352520, 2646585, 3528780, 4234536, 5293170, 7057560, 10586340, 21172680]

約数ペア:

[(1, 21172680), (2, 10586340), (3, 7057560), (4, 5293170), (5, 4234536), (6, 3528780), (8, 2646585), (9, 2352520), (10, 2117268), (12, 1764390), (15, 1411512), (18, 1176260), (20, 1058634), (24, 882195), (30, 705756), (36, 588130), (40, 529317), (45, 470504), (60, 352878), (72, 294065), (90, 235252), (103, 205560), (120, 176439), (180, 117626), (206, 102780), (309, 68520), (360, 58813), (412, 51390), (515, 41112), (571, 37080), (618, 34260), (824, 25695), (927, 22840), (1030, 20556), (1142, 18540), (1236, 17130), (1545, 13704), (1713, 12360), (1854, 11420), (2060, 10278), (2284, 9270), (2472, 8565), (2855, 7416), (3090, 6852), (3426, 6180), (3708, 5710), (4120, 5139), (4568, 4635)]