21416850

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{523}}^1$

素因数の和:561

約数の個数: 144

約数和(自身を含む): 70953792

約数和(自身を除く): 49536942

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 25, 26, 30, 35, 39, 42, 45, 50, 63, 65, 70, 75, 78, 90, 91, 105, 117, 126, 130, 150, 175, 182, 195, 210, 225, 234, 273, 315, 325, 350, 390, 450, 455, 523, 525, 546, 585, 630, 650, 819, 910, 975, 1046, 1050, 1170, 1365, 1569, 1575, 1638, 1950, 2275, 2615, 2730, 2925, 3138, 3150, 3661, 4095, 4550, 4707, 5230, 5850, 6799, 6825, 7322, 7845, 8190, 9414, 10983, 13075, 13598, 13650, 15690, 18305, 20397, 20475, 21966, 23535, 26150, 32949, 33995, 36610, 39225, 40794, 40950, 47070, 47593, 54915, 61191, 65898, 67990, 78450, 91525, 95186, 101985, 109830, 117675, 122382, 142779, 164745, 169975, 183050, 203970, 235350, 237965, 274575, 285558, 305955, 329490, 339950, 428337, 475930, 509925, 549150, 611910, 713895, 823725, 856674, 1019850, 1189825, 1427790, 1529775, 1647450, 2141685, 2379650, 3059550, 3569475, 4283370, 7138950, 10708425, 21416850]

約数ペア:

[(1, 21416850), (2, 10708425), (3, 7138950), (5, 4283370), (6, 3569475), (7, 3059550), (9, 2379650), (10, 2141685), (13, 1647450), (14, 1529775), (15, 1427790), (18, 1189825), (21, 1019850), (25, 856674), (26, 823725), (30, 713895), (35, 611910), (39, 549150), (42, 509925), (45, 475930), (50, 428337), (63, 339950), (65, 329490), (70, 305955), (75, 285558), (78, 274575), (90, 237965), (91, 235350), (105, 203970), (117, 183050), (126, 169975), (130, 164745), (150, 142779), (175, 122382), (182, 117675), (195, 109830), (210, 101985), (225, 95186), (234, 91525), (273, 78450), (315, 67990), (325, 65898), (350, 61191), (390, 54915), (450, 47593), (455, 47070), (523, 40950), (525, 40794), (546, 39225), (585, 36610), (630, 33995), (650, 32949), (819, 26150), (910, 23535), (975, 21966), (1046, 20475), (1050, 20397), (1170, 18305), (1365, 15690), (1569, 13650), (1575, 13598), (1638, 13075), (1950, 10983), (2275, 9414), (2615, 8190), (2730, 7845), (2925, 7322), (3138, 6825), (3150, 6799), (3661, 5850), (4095, 5230), (4550, 4707)]