30723980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{293}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 76014288

約数和(自身を除く): 45290308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 107, 140, 196, 214, 245, 293, 428, 490, 535, 586, 749, 980, 1070, 1172, 1465, 1498, 2051, 2140, 2930, 2996, 3745, 4102, 5243, 5860, 7490, 8204, 10255, 10486, 14357, 14980, 20510, 20972, 26215, 28714, 31351, 41020, 52430, 57428, 62702, 71785, 104860, 125404, 143570, 156755, 219457, 287140, 313510, 438914, 627020, 877828, 1097285, 1536199, 2194570, 3072398, 4389140, 6144796, 7680995, 15361990, 30723980]

約数ペア:

[(1, 30723980), (2, 15361990), (4, 7680995), (5, 6144796), (7, 4389140), (10, 3072398), (14, 2194570), (20, 1536199), (28, 1097285), (35, 877828), (49, 627020), (70, 438914), (98, 313510), (107, 287140), (140, 219457), (196, 156755), (214, 143570), (245, 125404), (293, 104860), (428, 71785), (490, 62702), (535, 57428), (586, 52430), (749, 41020), (980, 31351), (1070, 28714), (1172, 26215), (1465, 20972), (1498, 20510), (2051, 14980), (2140, 14357), (2930, 10486), (2996, 10255), (3745, 8204), (4102, 7490), (5243, 5860)]