20720070

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{577}}^1$

素因数の和:619

約数の個数: 128

約数和(自身を含む): 66585600

約数和(自身を除く): 45865530

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 35, 38, 42, 45, 54, 57, 63, 70, 90, 95, 105, 114, 126, 133, 135, 171, 189, 190, 210, 266, 270, 285, 315, 342, 378, 399, 513, 570, 577, 630, 665, 798, 855, 945, 1026, 1154, 1197, 1330, 1710, 1731, 1890, 1995, 2394, 2565, 2885, 3462, 3591, 3990, 4039, 5130, 5193, 5770, 5985, 7182, 8078, 8655, 10386, 10963, 11970, 12117, 15579, 17310, 17955, 20195, 21926, 24234, 25965, 31158, 32889, 35910, 36351, 40390, 51930, 54815, 60585, 65778, 72702, 76741, 77895, 98667, 109053, 109630, 121170, 153482, 155790, 164445, 181755, 197334, 218106, 230223, 296001, 328890, 363510, 383705, 460446, 493335, 545265, 592002, 690669, 767410, 986670, 1090530, 1151115, 1381338, 1480005, 2072007, 2302230, 2960010, 3453345, 4144014, 6906690, 10360035, 20720070]

約数ペア:

[(1, 20720070), (2, 10360035), (3, 6906690), (5, 4144014), (6, 3453345), (7, 2960010), (9, 2302230), (10, 2072007), (14, 1480005), (15, 1381338), (18, 1151115), (19, 1090530), (21, 986670), (27, 767410), (30, 690669), (35, 592002), (38, 545265), (42, 493335), (45, 460446), (54, 383705), (57, 363510), (63, 328890), (70, 296001), (90, 230223), (95, 218106), (105, 197334), (114, 181755), (126, 164445), (133, 155790), (135, 153482), (171, 121170), (189, 109630), (190, 109053), (210, 98667), (266, 77895), (270, 76741), (285, 72702), (315, 65778), (342, 60585), (378, 54815), (399, 51930), (513, 40390), (570, 36351), (577, 35910), (630, 32889), (665, 31158), (798, 25965), (855, 24234), (945, 21926), (1026, 20195), (1154, 17955), (1197, 17310), (1330, 15579), (1710, 12117), (1731, 11970), (1890, 10963), (1995, 10386), (2394, 8655), (2565, 8078), (2885, 7182), (3462, 5985), (3591, 5770), (3990, 5193), (4039, 5130)]