21691920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:173

約数の個数: 160

約数和(自身を含む): 72852480

約数和(自身を除く): 51160560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 67, 71, 76, 80, 95, 114, 120, 134, 142, 152, 190, 201, 213, 228, 240, 268, 284, 285, 304, 335, 355, 380, 402, 426, 456, 536, 568, 570, 670, 710, 760, 804, 852, 912, 1005, 1065, 1072, 1136, 1140, 1273, 1340, 1349, 1420, 1520, 1608, 1704, 2010, 2130, 2280, 2546, 2680, 2698, 2840, 3216, 3408, 3819, 4020, 4047, 4260, 4560, 4757, 5092, 5360, 5396, 5680, 6365, 6745, 7638, 8040, 8094, 8520, 9514, 10184, 10792, 12730, 13490, 14271, 15276, 16080, 16188, 17040, 19028, 19095, 20235, 20368, 21584, 23785, 25460, 26980, 28542, 30552, 32376, 38056, 38190, 40470, 47570, 50920, 53960, 57084, 61104, 64752, 71355, 76112, 76380, 80940, 90383, 95140, 101840, 107920, 114168, 142710, 152760, 161880, 180766, 190280, 228336, 271149, 285420, 305520, 323760, 361532, 380560, 451915, 542298, 570840, 723064, 903830, 1084596, 1141680, 1355745, 1446128, 1807660, 2169192, 2711490, 3615320, 4338384, 5422980, 7230640, 10845960, 21691920]

約数ペア:

[(1, 21691920), (2, 10845960), (3, 7230640), (4, 5422980), (5, 4338384), (6, 3615320), (8, 2711490), (10, 2169192), (12, 1807660), (15, 1446128), (16, 1355745), (19, 1141680), (20, 1084596), (24, 903830), (30, 723064), (38, 570840), (40, 542298), (48, 451915), (57, 380560), (60, 361532), (67, 323760), (71, 305520), (76, 285420), (80, 271149), (95, 228336), (114, 190280), (120, 180766), (134, 161880), (142, 152760), (152, 142710), (190, 114168), (201, 107920), (213, 101840), (228, 95140), (240, 90383), (268, 80940), (284, 76380), (285, 76112), (304, 71355), (335, 64752), (355, 61104), (380, 57084), (402, 53960), (426, 50920), (456, 47570), (536, 40470), (568, 38190), (570, 38056), (670, 32376), (710, 30552), (760, 28542), (804, 26980), (852, 25460), (912, 23785), (1005, 21584), (1065, 20368), (1072, 20235), (1136, 19095), (1140, 19028), (1273, 17040), (1340, 16188), (1349, 16080), (1420, 15276), (1520, 14271), (1608, 13490), (1704, 12730), (2010, 10792), (2130, 10184), (2280, 9514), (2546, 8520), (2680, 8094), (2698, 8040), (2840, 7638), (3216, 6745), (3408, 6365), (3819, 5680), (4020, 5396), (4047, 5360), (4260, 5092), (4560, 4757)]