21902790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:214

約数の個数: 128

約数和(自身を含む): 66189312

約数和(自身を除く): 44286522

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 71, 78, 91, 105, 113, 130, 142, 182, 195, 210, 213, 226, 273, 339, 355, 390, 426, 455, 497, 546, 565, 678, 710, 791, 910, 923, 994, 1065, 1130, 1365, 1469, 1491, 1582, 1695, 1846, 2130, 2373, 2485, 2730, 2769, 2938, 2982, 3390, 3955, 4407, 4615, 4746, 4970, 5538, 6461, 7345, 7455, 7910, 8023, 8814, 9230, 10283, 11865, 12922, 13845, 14690, 14910, 16046, 19383, 20566, 22035, 23730, 24069, 27690, 30849, 32305, 38766, 40115, 44070, 48138, 51415, 56161, 61698, 64610, 80230, 96915, 102830, 104299, 112322, 120345, 154245, 168483, 193830, 208598, 240690, 280805, 308490, 312897, 336966, 521495, 561610, 625794, 730093, 842415, 1042990, 1460186, 1564485, 1684830, 2190279, 3128970, 3650465, 4380558, 7300930, 10951395, 21902790]

約数ペア:

[(1, 21902790), (2, 10951395), (3, 7300930), (5, 4380558), (6, 3650465), (7, 3128970), (10, 2190279), (13, 1684830), (14, 1564485), (15, 1460186), (21, 1042990), (26, 842415), (30, 730093), (35, 625794), (39, 561610), (42, 521495), (65, 336966), (70, 312897), (71, 308490), (78, 280805), (91, 240690), (105, 208598), (113, 193830), (130, 168483), (142, 154245), (182, 120345), (195, 112322), (210, 104299), (213, 102830), (226, 96915), (273, 80230), (339, 64610), (355, 61698), (390, 56161), (426, 51415), (455, 48138), (497, 44070), (546, 40115), (565, 38766), (678, 32305), (710, 30849), (791, 27690), (910, 24069), (923, 23730), (994, 22035), (1065, 20566), (1130, 19383), (1365, 16046), (1469, 14910), (1491, 14690), (1582, 13845), (1695, 12922), (1846, 11865), (2130, 10283), (2373, 9230), (2485, 8814), (2730, 8023), (2769, 7910), (2938, 7455), (2982, 7345), (3390, 6461), (3955, 5538), (4407, 4970), (4615, 4746)]