21214830

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:458

約数の個数: 128

約数和(自身を含む): 66124800

約数和(自身を除く): 44909970

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 19, 21, 26, 30, 35, 38, 39, 42, 57, 65, 70, 78, 91, 95, 105, 114, 130, 133, 182, 190, 195, 210, 247, 266, 273, 285, 390, 399, 409, 455, 494, 546, 570, 665, 741, 798, 818, 910, 1227, 1235, 1330, 1365, 1482, 1729, 1995, 2045, 2454, 2470, 2730, 2863, 3458, 3705, 3990, 4090, 5187, 5317, 5726, 6135, 7410, 7771, 8589, 8645, 10374, 10634, 12270, 14315, 15542, 15951, 17178, 17290, 23313, 25935, 26585, 28630, 31902, 37219, 38855, 42945, 46626, 51870, 53170, 54397, 74438, 77710, 79755, 85890, 101023, 108794, 111657, 116565, 159510, 163191, 186095, 202046, 223314, 233130, 271985, 303069, 326382, 372190, 505115, 543970, 558285, 606138, 707161, 815955, 1010230, 1116570, 1414322, 1515345, 1631910, 2121483, 3030690, 3535805, 4242966, 7071610, 10607415, 21214830]

約数ペア:

[(1, 21214830), (2, 10607415), (3, 7071610), (5, 4242966), (6, 3535805), (7, 3030690), (10, 2121483), (13, 1631910), (14, 1515345), (15, 1414322), (19, 1116570), (21, 1010230), (26, 815955), (30, 707161), (35, 606138), (38, 558285), (39, 543970), (42, 505115), (57, 372190), (65, 326382), (70, 303069), (78, 271985), (91, 233130), (95, 223314), (105, 202046), (114, 186095), (130, 163191), (133, 159510), (182, 116565), (190, 111657), (195, 108794), (210, 101023), (247, 85890), (266, 79755), (273, 77710), (285, 74438), (390, 54397), (399, 53170), (409, 51870), (455, 46626), (494, 42945), (546, 38855), (570, 37219), (665, 31902), (741, 28630), (798, 26585), (818, 25935), (910, 23313), (1227, 17290), (1235, 17178), (1330, 15951), (1365, 15542), (1482, 14315), (1729, 12270), (1995, 10634), (2045, 10374), (2454, 8645), (2470, 8589), (2730, 7771), (2863, 7410), (3458, 6135), (3705, 5726), (3990, 5317), (4090, 5187)]