217191720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{29671}}^1$

素因数の和:29746

約数の個数: 64

約数和(自身を含む): 662279040

約数和(自身を除く): 445087320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 120, 122, 183, 244, 305, 366, 488, 610, 732, 915, 1220, 1464, 1830, 2440, 3660, 7320, 29671, 59342, 89013, 118684, 148355, 178026, 237368, 296710, 356052, 445065, 593420, 712104, 890130, 1186840, 1780260, 1809931, 3560520, 3619862, 5429793, 7239724, 9049655, 10859586, 14479448, 18099310, 21719172, 27148965, 36198620, 43438344, 54297930, 72397240, 108595860, 217191720]

約数ペア:

[(1, 217191720), (2, 108595860), (3, 72397240), (4, 54297930), (5, 43438344), (6, 36198620), (8, 27148965), (10, 21719172), (12, 18099310), (15, 14479448), (20, 10859586), (24, 9049655), (30, 7239724), (40, 5429793), (60, 3619862), (61, 3560520), (120, 1809931), (122, 1780260), (183, 1186840), (244, 890130), (305, 712104), (366, 593420), (488, 445065), (610, 356052), (732, 296710), (915, 237368), (1220, 178026), (1464, 148355), (1830, 118684), (2440, 89013), (3660, 59342), (7320, 29671)]