21037180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 50803200

約数和(自身を除く): 29766020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 29, 38, 46, 58, 76, 83, 92, 95, 115, 116, 145, 166, 190, 230, 290, 332, 380, 415, 437, 460, 551, 580, 667, 830, 874, 1102, 1334, 1577, 1660, 1748, 1909, 2185, 2204, 2407, 2668, 2755, 3154, 3335, 3818, 4370, 4814, 5510, 6308, 6670, 7636, 7885, 8740, 9545, 9628, 11020, 12035, 12673, 13340, 15770, 19090, 24070, 25346, 31540, 36271, 38180, 45733, 48140, 50692, 55361, 63365, 72542, 91466, 110722, 126730, 145084, 181355, 182932, 221444, 228665, 253460, 276805, 362710, 457330, 553610, 725420, 914660, 1051859, 1107220, 2103718, 4207436, 5259295, 10518590, 21037180]

約数ペア:

[(1, 21037180), (2, 10518590), (4, 5259295), (5, 4207436), (10, 2103718), (19, 1107220), (20, 1051859), (23, 914660), (29, 725420), (38, 553610), (46, 457330), (58, 362710), (76, 276805), (83, 253460), (92, 228665), (95, 221444), (115, 182932), (116, 181355), (145, 145084), (166, 126730), (190, 110722), (230, 91466), (290, 72542), (332, 63365), (380, 55361), (415, 50692), (437, 48140), (460, 45733), (551, 38180), (580, 36271), (667, 31540), (830, 25346), (874, 24070), (1102, 19090), (1334, 15770), (1577, 13340), (1660, 12673), (1748, 12035), (1909, 11020), (2185, 9628), (2204, 9545), (2407, 8740), (2668, 7885), (2755, 7636), (3154, 6670), (3335, 6308), (3818, 5510), (4370, 4814)]